a:6:{i:0;s:11:"currency_id";i:1;s:13:"currency_name";i:2;s:15:"currency_symbol";i:3;s:8:"add_time";s:3:"_pk";s:11:"currency_id";s:5:"_type";a:4:{s:11:"currency_id";s:16:"int(11) unsigned";s:13:"currency_name";s:11:"varchar(60)";s:15:"currency_symbol";s:11:"varchar(60)";s:8:"add_time";s:16:"int(11) unsigned";}}